I not agree... Ambush using florests as camouflage was used at past end still in use today. The buttle's tatics need to be change to fight in florests it's the unic thing to take care.
To your self improvement, take a look in this link, You will see real battle reports form the anchient age in forests:
http://www.kalkriese-varusschlacht.de/index/getlang/en
http://www.livius.org/te-tg/teutoburg/teutoburg01.htm
But, usualy generals avert to battle in forests.
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